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Liang L, Song H, Ma B, Zhang Z, Zhu K, Li Q, Zhou C, Li A, Liu J, Zhang Q, Zhu S, Zhang Q. Renal Ewing's sarcoma/primitive neuroectodermal tumor (PNET): a case series of 7 patients and literature review. Transl Androl Urol 2021; 10:548-554. [PMID: 33718057 PMCID: PMC7947461 DOI: 10.21037/tau-20-1122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background Primitive neuroectodermal tumor (PNET) is a rare kind of sarcoma that is primarily found in the kidney and has a very poor prognosis. Here, we review and summarize the clinical data of patients with renal PNET in our center and follow up the patients for survival status. Although the current literature suggests that chemotherapy may benefit the survival of these patients, the information from our center suggests that this may not be the case. Methods We retrospectively analyzed the clinical data of patients with renal PNET diagnosed pathologically at Peking University First Hospital from January 1, 2007, to January 1, 2018. All of the patients were followed up for survival status. Results Seven patients with renal PNET were found. The ratio of males to females was 6:1. The median age was 29 years (21–72 years) at the time of diagnosis. The preoperative imaging examination showed a large renal mass protruding outwards from the renal contour, with internal necrosis and hemorrhage. Six/7 patients were diagnosed with distant metastasis or retroperitoneal lymph node metastasis. The main clinical manifestations of patients were pain (5/7) and fever (3/7). In immunohistochemistry, all patients’ samples were CD99 positive. All patients died in our follow-up, with an average overall survival (OS) of 12.09 months (1.90–26.77 months). Conclusions As a rare renal tumor, renal PNET has a propensity to occur in young males. Most patients have distant metastasis when they are diagnosed, and the prognosis is very poor. Effective treatments are urgently needed.
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Affiliation(s)
- Lei Liang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Haifeng Song
- Department of Urology, Beijing Tsinghua Changgung Hospital, Beijing, China
| | - Binglei Ma
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Zhenan Zhang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Kun Zhu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Qinhan Li
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Chaohui Zhou
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Aolin Li
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Jun Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Quan Zhang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Shiyu Zhu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
| | - Qian Zhang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing, China
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Lim TZ, Chan DKH, Tan KK. Imaging detected retro-peritoneal masses: a diagnostic dilemma? ANZ J Surg 2016; 88:E625-E626. [PMID: 27071743 DOI: 10.1111/ans.13536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/09/2016] [Accepted: 02/20/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Tian-Zhi Lim
- Division of Colorectal Surgery, University Surgical Cluster, National University Health System, Singapore
| | - Dedrick Kok-Hong Chan
- Division of Colorectal Surgery, University Surgical Cluster, National University Health System, Singapore
| | - Ker-Kan Tan
- Division of Colorectal Surgery, University Surgical Cluster, National University Health System, Singapore.,Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Yang C, Xu H, Zhou J, Hao Z, Wang J, Lin C, Zhang L, Zhu X, Liang C. Renal Primitive Neuroectodermal Tumor: A Case Report. Medicine (Baltimore) 2015; 94:e2304. [PMID: 26656379 PMCID: PMC5008524 DOI: 10.1097/md.0000000000002304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Primitive neuroectodermal tumor (PNET) is a malignant small round cell tumor and typically arises from bone or soft tissue in adolescents and young adults. Renal PNET is extraordinarily rare and exhibits highly aggressive biological behavior with poor prognosis.We present here a new case of renal PNET in a 31-year-old female. The patients were referred to our hospital because of left flank pain with nausea and vomiting for 1 week. A computed tomography scan revealed a 14.7 × 12.7 cm well-defined, unevenly mass lesion with both solid and cystic components and the tumor was not enhanced uniformly.A preoperative diagnosis of cystic renal cell carcinoma and urinary tract infection was made. The patient undergone anti-inflammatory therapy followed by a left radical nephrectomy. Taken with morphological pattern and immunohistochemical markers, a diagnosis of renal PNET was made. Two cycles of combined chemotherapy were executed. At the 14-month follow-up, no evidence of metastasis or recurrence was indicated.This case reminds clinicians that for adolescents and young adults with a suspicious renal mass, a diagnosis of renal PNET should be always considered. An initial surgery followed by radiotherapy and chemotherapy is suggested for the therapeutic management.
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Affiliation(s)
- Cheng Yang
- From the Department of Urology (CY, HX, JZ, ZH, JW, LZ, CL), The First Affiliated Hospital of Anhui Medical University, Hefei; Department of Urology (CL), The Central Hospital of Maanshan, The Affiliated Hospital of Wannan Medical College, Maanshan; and Department of Pathology (XZ), The First Affiliated Hospital of Anhui Medical University, Hefei, China
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